Rovers, who lost 31-12 to Leigh at the inaugural Summer Bash in 2015 and were hammered 37-0 by Halifax last year, never recovered after being 12-0 down after 10 minutes. John Davies’ two tries were vain for Featherstone whose six-match winning run ended with a mistake-ridden performance.

Rovers coach Jon Sharp said: “We wore a different strip and it looked like a different team as well. It was not what I’ve seen all year. I was really disappointed.”

French international William Barthau’s clever kicks set up early tries for Jarrod Sammut and Alex Walker.

London’s domination continued when Kieran Dixon put them 14-0 ahead with his third goal.

Darrell Griffin was then held up over the line as the Broncos survived further Featherstone pressure before half-time.

Rovers made an ideal start to the second half when Davies plunged over from close range from Matty Wildie’s pass and Cory Aston converted to cut the gap to eight points but the Broncos quickly regained control with two tries in three minutes.

Rovers were punished for losing the ball when Andrew Ackers scored and Barthau’s high kick then created Walker’s second touchdown to put London 22-6 up.

Featherstone’s Ian Hardman and London’s Elliot Kear were sin-binned after a 56th minute flare-up before Walker sent in ex-Rovers player Michael Channing.

Luke Briscoe made the opening for Scott Turner to cross and Davies grabbed his second try two minutes later to give Rovers hope but they finished well beaten. They lost Turner with an ankle injury before London rounded off their sixth straight win with a 75-yard try from Barthau and a late effort from Dixon who kicked his seventh goal.